热带优质速生用材树种——小瘤龙脑香的引种栽培研究

Introduction and cultivation of Dipterocarpus tuberoulatus R. in Xishuangbanna,China

引种泰国的小瘤龙脑香经22年的栽培观测表明,该树种在引种地中国的西双版纳生长迅速,超过原产地部分地区;开花结果正常,用种子已繁殖出一批新植株;对其落叶量和林下土壤养分的测定表明,该树种具有保持水土、改良土壤的作用。本文还就小瘤龙脑香的造林的环境条件要求以及国外种植情况及其经济效益等方面,分析了该树种在我国热带地区大面积发展的可行性。

Diptercarpus tuberculatus R. was introduced from Thailand into Xishuangbanna, Yunna Province in 1980. 22 years cultivation showed that the plants grew faster than in some areas oftheir native area. The flowering and fruiting of the plants were normal and its seeds had grown a group of seedling. The determination of fallen leaf amount and soil nutrient under the plants showed that the plant might serve as a species for conservation of soil and water as well as amelioration of soil. The feasibility of large-scale development of D. tuberculatus R. in tropical area of China is also evaluated in regard to the utilization value of the species, environmental requirements of afforestation and the conditions of cultivating abroad and economic benefit as well.